Tractor-plow guide



March 3, 1931. I R. R. McLAMARRAH 1,795,225

TRACTOR PLOW GUIDE Filed May 15, 1950 4 Sheets-Sheet 2 A Home y lip R. R. MCLAMARRAH 1,795,225

['RACTOR PLOW GUIDE March 3, 1931.

Filed May 13, 1930 4 Sheets-Sheet 5 Invenlor werffzamrra/fi A llorney March 3, 1931. R. R. McL 1,795,225

. TRACTOR PLQW GUIDE Filed May 15, 1930 {Sheets-Sheet 4 I n venlor zmm A Ilomey UNITED STAT [PA- -10 'The prime object eithe inventionresides em ,8 denotes e guldewhel 20 "features of construction, and in the combinain eidifiernt l l P i y a bolt 1 65 30 a substantially on the l1ne 3 3 of Figure 1, brace 27 of t Patented Mar. 3, l931 d c v r meme 3.. MOIJIAZVMABRAHROF woousooxnr, sou'rn pAKo'rrA I TRACTOR-PIJOW"GUIDE a Application filed 'May' 13, 1930. Serial vNO. 452,006. L The present invention relates T to tractor .Figure is a sectional View taken substane' plow guides or a steering device'for tractors tially on the line 1010 of Figure 1. a adapted to be ioperatively connected with Referring tothe drawlngin detail it will the front wheelsof a. tractor and to be used be seen that the letter T denotes generally a 5 for automatically guiding-the tractor when conventional forn of tractor Comprising the 0 it is used for hauling a plow. The steering td rlg b e Whee1s5 controlled by a steerdevice is adapted-tofollo'wjn the lastrfurrow lng arm casting 6 1n the usual well known turned-by theiplow onit-s preceding round manner. l 'l lhe numeral denotes a scraper" o lofig th fi ld bar wh1ch is also partof the tractor.

in the provisionof an: apparatus ofthis na- Whi h is journalled onsthe exti em it of n ture which is easy to manipulate and'adju'st, axle bar? havlng an obllque extension 10 rethoroughly efficient and reli bl i use d cel'vable in a hollowbar '11 and ad ustablein operation fstrong and durable,'andotherwise r p t -h reto by means of a bolt 12. The adaptedto the purpose for which itlis d hollow bar 11 1s plvotally engaged as at l4 I69 i n d, f p q w th the steering arm castmg 6. A bar 15 1s *Wit'h th'e above'and numerous otherobjects p t l y g g b ween the cars 16 ex 7 in View as 'will'appar as the description proten gf om i h i 1 S ceeds, the invention resides in certain novel slldablyrecelved 111 a hOHOWlOM-U l tion and arrangement of parts as will be The hollow bill 17 a a reduced 611d @Xtenhereinafter more fully described and claimed. n P y g g between brackets a i 20 on sa1d scraper bar 7.

Inthe drawing: 7 a v, F Fi 1 i a t pl i of 3i l h The bars 15 and. 11 form an ad ustable i i ed p atu t d th brace. An ad1ustable bracket comprises a 70 Om V r H hollow bar 2 1 bolted to a lug 22 projecting Figure 2 is'a side elevation of the tractor from e c g 6 and V g a i l and apparatus, I v mount-id therein a bar-v23 by means of a bolt Y, p t k 2 L. T e ar 23 terminates in a frame25 1n Flgure 3 1S a detml sectlonal Vlew a en whlch 1s Ournalled a pair of pulleys 26. A 75 as a he bowed type is en a ed with gffgfi 3 52i g l gg i fiz gy sg g i the bolt 24 and with one of the bolts in the ure 1 I p 22. a a 1 1 J i 1 'l narm is mounted on casting 31 form 5 fFlgulfe y td a l Substan' ing part of the tractor and supports a pulley so nan}, n h t n 5 0., f ll 7 d bracket structure 32 on the bar 21 the pulley F g l Pl n f er ll belng denoted by the numeral 33. A cable'34 fil 1 3 P f zl a 1 .k has oneend anchored and a pulley frame 35 3 15 a e l wm Y en attached to a 11p 36 rising from the axle bar Substantially nt line 7- of Figure 9. A pulleyBT is in the frame 35. Said cable g r 8 1S adetail tTHn'SVBTSe' sectlon taken 84 rises from the frame 35 over one of the pul- V substantially on the line 88vof- Figure 3', leys 26 and downwardly over the pulley 37 Figure 9 is ar top planvie'w' of the guide and then upwardly over the other pulley 26 wheel showing a portion of the axle bar eX- and then over the pulley 33 attached to an intermediate portion of a lever 40 which is 45 tending therefrom,

rockable on a bracket 41 clamped on a portion of its tractor indicated by the numeral 42. A somewhat U-shaped member 43 is also anchored on the portion 4-2 with the bracket 41 and extends upwardly and forwardly and in the forwardly extending portion there is formed a notch 45 to cooperate with the detent structure 46 on the lever 40.

By moving the lever 40 rearwardly to the dotted line position shown in Figure 7 it will be seen that the guide wheel may be raised off the ground or out of the furrow.

When this guide wheel is in a furrow it will automatically guide the tractor to run parallel with said furrow as will be quite apparent.

It is thought that the construction, operation, utility and advantages of this invention will now be quite apparent to those skilled in this art without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely'for the purposes of exemplification since in actual practice it attains the features of advantage enumerated in the statement of the invention and the above description.

It will be apparent that changes in the de tails of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit or scopeof the invention as hereinafter claimed or Seerificing any of its advantages.

Having thus described my invention, what I claim as new is: V

1. In combination with a tractor including a steering arm casting, a guide wheel, an axle bar on which the guide wheel is journalled, a hollow bar pivotally mounted to swing vertically on the casting and to receive the axle bar, means for holding the bars in adjusted relationship to each other.

2. In combination with a tractor including a steering arm casting, a guide wheel, an axle bar on which the guide wheel is journalled, a hollow bar pivotally mounted to swing vertically on the casting and to receive the axle bar, means for holding the bars in adjusted relationship to each other, a bracket projecting from the casting and having a frame on its end with a pair of pulleys journalled therein, a pulley frame anchored on the axle bar, a cable attached to the last mentioned pulley frame and journalled over one of the first mentioned pulleys and then over the third mentioned pulley and then back over the first mentioned pulleys and means for pulling on the cable to raise the guide wheel.

3. In combination with a tractor including a. steering arm casting, a guide wheel, an axle bar on which the guide wheel is journalled, a hollow bar pivotally mounted to swing vertically on the casting and to receive the axle bar, means for holding the bars in adjusted relationship to each other, a bracket projecting from the casting and having a frame on its end-with a pair of pulleys journalled therein, a pulley frame anchored on the axle bar, a cable attached to the last mentioned pulley frame and journalled over one of the first mentioned pulleys and then over the third mentioned pulley and then back over the first mentioned pulleys and means for pulling on the cable to raise the guide wheel, said bracket being adjustably formed of the sections, one telescoped in the other.

' 4. In combination with a tractor including a steering arm casting, a guide wheel, an axle bar on which the guide wheel is ournalled, a hollow bar pivotally mounted to swing vertically on the casting and to receive the axle bar, means for holding the bars in adj ustedrelationship to each other, a bracket projecting from the casting and having a frameon its end witha pair of pulleys journalledtherein, a pulley frame anchored on the axle bar, a cable attached to the last mentioned pulley frame and journalled over one of 'the'first mentioned pulleys and then over the third mentioned pulley and then back over the first m'entioned'pulleysand means for pulling on the cable to raise the guide wheel, said bracket being adjustably formed of the sections, one telescoped in: the other, means for holdingthe sections in different adjusted relationship.

5. In combination with a tractor includ ing a steering arm casting, a guide wheel, an axle bar on which the guide wheel is jour- 10o nalled, a hollow bar pivotally mounted to swing vertically on the casting and to receive the axle bar, means for holding the bars in adjusted relationship to each other, a bracket projecting from the casting and having a frame on its end with a pair of pulleys journalled therein, a pulley frame anchored on the axle bar, a cable attached to the last mentioned pulley frame and journalled over one of the first mentioned pulleys and then over the third mentioned pulley and then back over the first mentioned pulleys and means for pulling onthe cable to raise the guide wheel, said bracket being adjustably formed of the sections,fone telescoped in the other, means for holding'the sections in difierent adjusted relationship, brace means pivotally engaged with a portion of the tractor and with the axle bar.

6. In combination with a tractor including a steering arm casting,,-a guide wheel, an axle bar on which the guide wheel is journalled, a hollow bar pivotally mounted to swing vertically on the casting and to receive the axle bar, means for holding the bars in adjusted relationship to each other,.a bracket projecting from the casting and having a frame on its end with a pair of pulleys journalled therein, a pulley frame anchored on I the axle bar, a cable attached to the last men-' adjusted relationship,

tioned pulley frame and journalled over one of the first mentioned pulleys and then over the third mentioned pulley and then. back over the first mentioned pulleys and means for pulling on the cable to raise the guide wheel, said bracket being adjustably formed of the sections, one telescoped in the other, means for holding the sections in different brace means pivotally engaged with a portion of the tractor and with the axle .bar sald brace means being adjustable.

In testimony ROBERT R. MQLAMARRAH.

whereof aifix my signature. I 

